Method of weaving pile fabrics



July 22, 1952 F. P. GROAT METHOD OF WEAVING FILE FABRICS Filed June 1, 1950 INVENTOR; flan Great Patented July 22, i952 METHOD .OF 'WEAVING'PILE FABRICS Francis P. Groat, 'Bloomsburg, Pa., 'assignor to The Magee Carpet Companm-Bloomshurg,Pal, v a corporation-ofPennsylvania.

Application June .1, 1950,'SblifilNbLI65j35 1i v This invention relates to. pile fabrics" and method of making the same. v

It is an improvement on the. method disclosed in my prior application filed December 28, 1949, Serial Number 135,444, now Patent No. 2,590,608, and particularly relates to loop pile fabrics or loop and tuft pile fabrics wherein some of the rows ofjloops have loops of different height. In my prior applicationt-a -method is disclosed for weaving pile fabrics on awir loom whereina plain ..pile.wire and a low shank knob wire are employed to form the rows of loop pile and a cutting wireintermediate the plain and knob wires iorms'therows .of tufts, .If an all loop pile is desiredthe cutting wire .iseliminated. 7

It isan object of .the present method to employ .avhighvcutting or plainwire, a .medium height plain wire and alow shank .knob wire, the wires being inserted in the fabric during the weaving of .the .same in the ordernamed whereby axpile texture is produced having .rows of low loops, .rows f..l0ops .of differentlheights injuxtaposition to the rows of lowloops and rows ofltuftsor highloops, .the .latter rows being spaced apart by at least .threeweft threads.

Other objects and advantages of the invention willbe apparentduring the course of .the followiingdescription. p

.,In the accompanying drawing forming apart of this specification and in which like numerals are employed to designatelike parts throughout the .same,

Fig. .1. .is any exploded perspective view of. a 'jfabricbeing woven in accordance withthe method,

and I Fig. 2 1 is a fragmentary warpwise section .of the woven. fabric showing some of the wires with- 'drawn.

In carrying out the method a conventional Jacquard wire loom is employed wherein a series of pile-wires are inserted .in the fabric during the weaving process and'after a desired number of the wireshave been inserted they are successively withdrawn and re-inserted in the shed formed immediately vfollowingthe last wire in a series. The backing of the fabric may be of any conventional construction but for the purpose of illustration I have shown a backing comprising upper and'lower weft threads "5'andf6'bound together by sets of binder warps 1 and 8. The pile warpsll' extend between the upper andlower seriesof weft threads and stuffer warps I0, as shown in Fig. 2, are disposed'beneath the pile warps.

As the pile warps 9 are selectively raised by the 13 :Claims. (Cities- 39) Jacquard mechanism the pile forming wires are successively inserted-in the fabric; In accordancewith my improved method a high cutting wire II or high plain wire I? is inserted inthe shed of selected pile-warps and then the warps are restored to the backing. A medium height plain wire I3 is inserted in the next shed of selected warps and thenthegwarps are restored to the backing. A low shank knob wire l4is inserted' in the next shed of selected warps and thenthe warps are restored to the backing. 'After inserting'the desired-number of wires in the-order mentioned, the first wire inserted is with drawn andreinserted in the fabricin the usual manner.- When a" high cutting wire ll iswithdrawn the loops l5 formed thereon will be cut toformarowof tufts l6,.or if a high plain wire I? .is used instead of the cutting'wire the with .drawal ofgthe wire will form a-row of high'loop's. Withdrawal ofamedium'height Wire forms aro w of loops ll of, less height thanthe rows of tufts or highloops 16. The'low shank knob wire i4 is ofthe same construction as the knob wire described in my co-pending application Serial Number ;445-, now Patent No. 2,590,609,. and.

has a very low shank with a knob l8 on the ;end of less height than the medium height wire I3. When a knob wire [4 is withdrawn the loops l9 formed on the low shank will ride up and ,over the knob l8 thereby being raised 'in-heightas at 2D, to a height corresponding to'the'heightbf the knob. If "the pile warps raised over the-knob wire M were also selected to form loops overjthe medium height wire l3, the raising of the loops I9 on wire J4 by action of the knob 18 will pull the pile warps to reduce those loops in the preceding row, as at 2|, formed from the same pile warps. Thus the withdrawal action of theknob Wire l4. serves to reduce the height of some of the loops inthe preceding row of medium height loops to form arow of differentheight loops.

By this method .a fabric is made'having successive rowsof tufts or high loops, rows of medium and'lowheight loops and rows of low loops. By selectively raising the pile warps over. thevdii ferent types of pile wires fabrics of 'variousclesigns may be wovenwith the cut orhighloops forming the design areas and the medium and low loops forming the background areas. In forming a tuft area the pile warps are not raised over the medium height or.low wires leaving voids between the rows of tufts which are the equivalentof 'tworows of loops. Thesevoids are completely concealedby splaying of thetufts. Jln forming the background areas the rows of low loops will have voids at spaced intervals but it will be observed these voids are opposite medium height loops of the preceding row so that when the fabric is beat up and the wires are withdrawn the medium height loops will bulge laterally and fill in th voids in the rows of low loops making it-appear that each row has a full complement of loops and that some are high and somefarelow in each row; The textured effect produced by the method is new and attractive.

Having thus described my invention, I claim: l. A method of weavin on a wire loom a pile fabric having a backing and plurality of pile warps which comprises selectively raising the pile warps over a non-cutting high'wire and restoring them to the backing, then selectively raising the pile warps over a non-cutting wire of lessen height thanthe high wire and restoring them 4 loops with intermediate rows of low loops and medium height loops and raising the rows of low loops to a height less than the height of the medium loops while lowering the height of those medium loops formed of the same pile warps as the low loops.

"I. A method as described in claim 6 wherein thefrows of'high loops are -cut to form rows of tufts. l

8. A method of weaving on a wire loom a pile Ifabric having a backing and plurality of pile warps which comprises selectively raising the pile warps and restoring them to the backing to form successive weftwise rows of high, medium and low loops with the rows of low loops having voids at spaced intervals and raising the rows of low loops to a height less than the height of the medium loops while lowering the height of those medium loops formed of the same pile warps as to the backing, then selectively raising the pile 1 warps over a low shank "noncutting wire having a raised'portion on its end of less height than said'se cond mentioned non-cutting wire and restoring them tothe backing, and. successively withdrawing said wires in the order named to form a-row of high loops, a rowof low and .medium height loops and a row of low loops.

. 2: A method of weaving on a wire loom a-pile fabric having a backing and plurality of pile warps which comprises selectively raising thepile warps over a cutting wire and restoring them to the backing, then selectively raising the .pile warps over a non-cutting wire of less height than said cutting wire andrestoringthem to the backing; then; selectively: raising the pile warps over; a;low shank wire having a raised portion on its end of less height than said non-cutting wire and restoring them to the backing, and successively withdrawing said wires in the order named to form a row of tufts, a row of low and highloops the high loops being of less height than the tufts and a row-of low loops...

z i 3. 'A methodof weaving on a wire loom a pile .fabric havinga backing and plurality of pile warps which comprises raising the pile warps in accordance with'a pattern and restoring them to the backing-to form successive weftwise. rows of high, mediumandlowloops and raising the rows of-low loops to aheight less thanthe height Qf-theem'edium loops while lowering the height of those medium loops lformed of the same pile warps as the low loops, 4

l'.'-A.-method as described in claim 3 wherein .therows of high loops arecut to form rows of tufts u .5, A method ofweaving ona wire loom a pile fabric having a backing and vplurality of pile ,warpslwhich comprises raising the pile. warps over av high wire and restoring them to the backing, Ithen raising the pile warps over a medium height wire and restoring them to the backing, thenraising some of the pile warps that were raised overthe medium, height wireover a low wire havinga raisedportion on its end 'of less height than 'the Imediumjheight wire and. restoringthem'to the backing, and thensuccessively 'withdrawing said wires inthe order named whereby the loopslon' the low wire are raised in height while lowering the height of those loops in the preceding row formed of the same pile warps.

the low loops and'leaving the remaining medium loops opposite the voids in the rows of low loops unchanged in height. 7 I

9. A method as described in claim '8l'wherein the.-rows of high loops are cut to form. rows of tufts.

10 A methodoi weaving a pile fabric on a wire loom which comprises inserting a high wire, .a medium wire and low knob wire successively in sheds of selected pile warps, the knob of said knob wire being of less height than said medium wire, weaving the pile warps over said wires'to iorm weftwise. rows of high, medium and low loops, with the rows of lowloops having'voids at spaced intervals, and successively withdrawing said wires to raise the rows of low loops and reduce the height of those loops of-medium height of the immediate preceding row of loops formed from the same pilewarps to a height corresponding to the height of the raised low loops.

I 11'. A method as described in claim wherein said high wire is a cutting wire.

j 12.Ai'method of weaving. a pile'fabric on a wire loom which comprises inserting a high wire into'a shed of pile warps, weaving the pile warps over said wire to form a row of high loops, inserting into a subsequent shed of pile warps a wire of less height than said first-mentioned wire weaving the pile warpsover, said second wire to form a row of, medium height loops, inserting into a subsequent shed of selected pile warps a knob Wire having a knob of less height than said second wire, weaving pile warps over said knob wire to form a row of low loops with voids at spaced intervals, successively withdrawing said wires whereby, the loops on said knob wireare.increasedflin height and those loops of the immediate preceding row of medium height loops formed from the same pile warps are reduced'in height,

l3. A'method as described in claim 12 wherein said first mentioned wire is' a cutting wire.

7 v Farmers P. seem REFERENCES CITED ihe following references are of record in-the file of this patent:

UNITED STATES PATENTS Number Name Date 7 2,164,090 Shuttleworth June 27, 1939 2,439,559." Dacey Nov. 11, ,1947 2,532,903

Great Dec. 5., i950 

